--- title: Accept a GrabPay payment with Stripe.js slug: accept-a-grabpay-payment-with-stripe-js published_at: 2021-07-16 00:00:10 +0000 updated_at: 2023-01-30 22:53:17 +0000 summary: description: In this episode, you'll learn how to confirm a GrabPay payment with an HTML and JavaScript client using a custom form. ### Table of contents 00:00 Introduction 01:00 Confirm server is running 02:00 Create a payment intent 03:19 Confirm a payment intent 04:01 Test the demo 04:34 Refetch the payment on return 05:40 Recap ### Server implementations Ruby - https://www.youtube.com/watch?v=079khYtqWPo Python - https://www.youtube.com/watch?v=3s4Dwox7oTQ PHP - https://www.youtube.com/watch?v=BPfpPGl85tk Node.js - https://www.youtube.com/watch?v=WG4ehXSEpz4 Java - https://www.youtube.com/watch?v=-uyXCnPXegE Go - https://www.youtube.com/watch?v=cbsCxLDL4EY .NET - https://www.youtube.com/watch?v=mqEjRgoZWdo ### Presenter CJ Avilla - Developer Advocate at Stripe - https://twitter.com/cjav_dev ### Resources Official client library: https://stripe.com/docs/js Official documentation: https://stripe.com/docs/payments/grabpay/accept-a-payment Code: https://github.com/stripe-samples/accept-a-payment/blob/main/custom-payment-flow/client/html/grabpay.js ### Support If you have a question, please feel free to reach out to our support team on Discord at https://stripe.com/go/developer-chat. ### Updates Sign up to stay updated with developer news: https://go.stripe.global/dev-digest ### Feedback If you have any feedback about this or other episodes, let us know: https://forms.gle/VjNqzRhotM2snYo88. #Stripe #Payments tags: [stripe, payments, grabpay, accept a grabpay payment, How to accept GrabPay, How to accept GrabPay with Stripe, GrabPay with JavaScript, Use JavaScript to accept GrabPay, GrabPay payments, GrabPay wallet, Take GrabPay wallet payments, GrabPay developer, GrabPay developer tutorial, How to add GrabPay to website, @cjav_dev] views: 695 author: CJ Avilla url: https://www.cjav.dev/videos/accept-a-grabpay-payment-with-stripe-js youtube_url: https://www.youtube.com/watch?v=m3lueukOKto youtube_id: m3lueukOKto embed_url: https://www.youtube.com/embed/m3lueukOKto thumbnail_url: https://i.ytimg.com/vi/m3lueukOKto/hqdefault.jpg type: video --- # Accept a GrabPay payment with Stripe.js *Published: July 16, 2021* *Views: 695* ## Watch [Watch on YouTube](https://www.youtube.com/watch?v=m3lueukOKto) [![Accept a GrabPay payment with Stripe.js](https://i.ytimg.com/vi/m3lueukOKto/hqdefault.jpg)](https://www.youtube.com/watch?v=m3lueukOKto) ## Description In this episode, you'll learn how to confirm a GrabPay payment with an HTML and JavaScript client using a custom form. ### Table of contents 00:00 Introduction 01:00 Confirm server is running 02:00 Create a payment intent 03:19 Confirm a payment intent 04:01 Test the demo 04:34 Refetch the payment on return 05:40 Recap ### Server implementations Ruby - https://www.youtube.com/watch?v=079khYtqWPo Python - https://www.youtube.com/watch?v=3s4Dwox7oTQ PHP - https://www.youtube.com/watch?v=BPfpPGl85tk Node.js - https://www.youtube.com/watch?v=WG4ehXSEpz4 Java - https://www.youtube.com/watch?v=-uyXCnPXegE Go - https://www.youtube.com/watch?v=cbsCxLDL4EY .NET - https://www.youtube.com/watch?v=mqEjRgoZWdo ### Presenter CJ Avilla - Developer Advocate at Stripe - https://twitter.com/cjav_dev ### Resources Official client library: https://stripe.com/docs/js Official documentation: https://stripe.com/docs/payments/grabpay/accept-a-payment Code: https://github.com/stripe-samples/accept-a-payment/blob/main/custom-payment-flow/client/html/grabpay.js ### Support If you have a question, please feel free to reach out to our support team on Discord at https://stripe.com/go/developer-chat. ### Updates Sign up to stay updated with developer news: https://go.stripe.global/dev-digest ### Feedback If you have any feedback about this or other episodes, let us know: https://forms.gle/VjNqzRhotM2snYo88. #Stripe #Payments ## Transcript in this episode you'll learn how to implement an html and javascript client to accept a one-time grab pay payment with a custom form pay is a payment method developed by grab it's a digital wallet customers they maintain a balance inside their wallets that they use to pay out with so in order to pay with grab pay customers are redirected to grabpay's website where they have to authenticate the transaction using a one-time password and after authenticating customers are going to be redirected back to your website in this example we're going to assume that we already have a server set up for creating payment intents and we want to add support for confirming those grab pay payments on the front end so if you don't already have a server implemented head over and take a look at one of our example integrations in one of the officially supported server languages those are going to be linked down in the description also before we get too far if you're using react we have videos covering how to accept grad pay payments with react also linked down in the description so let's let's jump into this and get started so our server is up and running it has two endpoints that we'll interact with today one is slash config for fetching publishable keys and one is slash create payment intent now this endpoint is going to accept a payment method type and a currency as arguments here we're going to pass grab pay and malaysian ringgits this endpoint is going to create a payment intent on the server and return its client secret property which we're going to use to confirm that payment on the client all right so let's take a look at what we already have in the client directory we have an index.html file which is showing on the right-hand side in the browser and right now we are going to link directly to grabpay.html so grabpay.html is currently a simple html page we're going to install some javascript files and build out a payment form so first we need to install stripe.js from js.stripe.com it is a best practice to load this on every single page next we'll install utils.js which has some helper methods for adding messages to this messages div down below and finally we'll add a script for grabpay.js which we're going to implement here in just a moment next we need to implement a payment form we'll start off with a form that just has a button now if we refresh the page we'll see that our form and the button is rendering on the page but when we click pay nothing happens because we need to wire up this form handler let's head over to grabpay.js and get started we're actually going to create a new javascript file called grabpay.js and once the dom is loaded we're going to construct an instance of the stripe object passing in our publishable key next we'll grab reference to the form and when the form is submitted we want to do two things first we're going to create a payment intent on the server second we're going to confirm that payment on the client we're going to use the built-in fetch api that the browser exposes in order to make an ajax request to our backend create payment intent endpoint this will return a promise that will resolve with either an error property or that client secret for the payment intent again we have to pass in both the payment method type and the currency here in practice you could hard code the payment method types in the currencies on the server we are only passing the payment method type and currency from the client in order to demonstrate the widest variety of payment method type and currency combinations if the request failed and we got an error back we're going to log that out to our messages div that was at the bottom of the page here using add message which is a function exposed by that utils library otherwise we're going to print out a message saying that the payment intent was created now let's confirm that payment on the client stripe object exposes a method called confirm grab pay payment this method accepts a couple different arguments the first is the client secret property for the payment intent that was just returned from the server the second is going to be a big options block for grab pay at a minimum we can pass just a return url but you can also pass other arguments in order to configure the billing details about the customer the name and email address etc here we'll just pass the return url coming back to return.html confirm grab pay payment will return a promise that might resolve with an error property if there was some sort of transient network failure if there was an error let's again add a message to our messages div printing out that message now we can refresh the page and take this thing for a spin so we'll click on pay and then we're redirected to the test payment page where we can then click on authorized test payment and we're redirected back to our return.html page now if we look in the query string for this return url we'll notice that there is both the id of the payment intent and the client secret property for the payment intent included in that return url in the query string we can use this on our return.html page in order to re-retrieve the payment intent and display the status of the payment to the customer on our thank you page so let's implement a new javascript file called return.js once the dom is fully loaded on that return page we'll construct another instance of that stripe object passing in our publishable key then we're going to extract the query string parameters from the url ex specifically grabbing onto that payment intent client secret property then we're going to use stripes retrieve payment intent method that's on stripe.js passing in that client secret a retrieve payment intent is going to return a promise that will resolve with that payment intent object so then we can add a message here down at the bottom printing out the id and the status of that payment intent now if we refresh the page we can see our message logged out to the console showing the id of the payment intent let's go through the flow again we'll click on pay we're redirected again to this test payment page we click on authorized test payment we're again redirected back to our return url where we can see this payment intent id if we click on the id for that payment intent we're brought into the stripe dashboard where we can take a look at that payment that came through for 19.99 we can confirm that it was accepted as a grab pay payment so just as a quick recap back in grabpay.html we added three javascript files and a very simple payment form with just a button then we implemented grabpay.js where we said let's initialize an instance of the stripe object and grab reference to this form and say when the form is submitted we're going to create the payment intent on the server by sending a post request to create payment intent with our payment method type and currency when the server responds with that client secret we're going to confirm that grab pay payment client side then we went over to return.js and implemented a little helper for re-retrieving the payment intent based on its client secret property and displaying the status and id of the payment on the page where the customer comes back so they can see the status of their payment all right at this point you're fully equipped to head out and implement a grab pay payment form with vanilla javascript and html thanks so much for watching and we'll see in the next one --- [Back to all videos](https://www.cjav.dev/videos) --- ## Hey Agent, thanks for visiting! 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